公开(公告)号：WO2018200045A1

公开(公告)日：2018-11-01

申请号：PCT/US2018/012891

申请日：2018-01-09

Applicant: RAYTHEON COMPANY

Inventor： HO, Phuoc T. ,  ANDERSON, Bruce R. ,  HAMMACK, Dan

IPC: G01S7/02

Abstract: Radio signals (101) including modulated radar signals of an unknown modulation type selected from among a predetermined group of modulation types are received, and a plurality of features (601, 602, 611, 612, 621, 622, 631, 632, 641, 642, 651, 652, 661, 662, 671, 672) are extracted for the received radio signals. A plurality of two dimensional (2D) maps are generated for pairs of the extracted features from the received radio signals. The 2D maps of extracted feature pairs for the received radio signals are processed using a binary tree (206) of discriminating vectors (603, 613, 623, 633, 643, 653, 663, 673), each of the discriminating vectors corresponding to recognition of at least one of the predetermined modulation types based on 2D feature maps and each of the discriminating vectors determined by processing 2D maps for pairs of features extracted from training samples using a support vector machine learning algorithm. The binary tree is derived by pruning permutations of sequences for applying the discriminating vectors according to iterative testing of modulation type recognition accuracy.

公开(公告)号：WO2018151763A1

公开(公告)日：2018-08-23

申请号：PCT/US2017/055611

申请日：2017-10-06

Applicant: RAYTHEON COMPANY

Inventor： TSUNODA, Stanley I. ,  GROBERT, Paul H. ,  HO, Phuoc T.

IPC: G01S5/06 ,  G01S5/02 ,  G01S5/00 ,  G01S3/48

Abstract: A system for multi-ship geolocation of a signal emitter of interest uses differential GPS (DGPS) to determine the relative positions of two or more receivers in order to determine baseline vectors between them. The geolocation of the signal emitter is then determined as a function of the baseline vectors. The use of DGPS allows for more efficient and useful geometries between the receivers as two receivers can both be in a mainlobe of an emitted signal and still provide increased geolocation accuracy.

公开(公告)号：WO2017155574A1

公开(公告)日：2017-09-14

申请号：PCT/US2016/055742

申请日：2016-10-06

Applicant: RAYTHEON COMPANY

Inventor： YOON, Albert ,  HO, Phuoc T. ,  TSUNODA, Stanley I.

IPC: G01S5/06 ,  G01S7/02

Abstract: A geolocation system on a platform, for example, an airplane, to identify a location of a signal emitting site includes an inertial navigation system and an array of signal detectors. A first subset of the detectors is on a flexing portion of the platform and a second subset of detectors is on a rigid portion of the platform. An inertial measurement unit is disposed adjacent to each of the detectors on the flexing portion. A locator module is configured to: calculate a respective velocity and a respective position of each one of the detectors positioned on the flexing portion as a function of respective inertial measurement data; and determine a position of the emitter as a function of the calculated velocity, calculated position, inertial navigation data, the detected signal data and data defining a flexure relationship between the flexing and rigid portions of the platform.

Abstract translation: 在平台（例如飞机）上的地理定位系统以识别信号发射位置的位置包括惯性导航系统和信号检测器阵列。 检测器的第一子集位于平台的挠曲部分上，并且第二检测器子集位于平台的刚性部分上。 惯性测量单元设置在弯曲部分上的每个检测器附近。 定位器模块被配置为：根据相应的惯性测量数据计算定位在弯曲部分上的每个检测器的相应速度和相应位置; 并根据计算出的速度，计算出的位置，惯性导航数据，检测到的信号数据和定义平台弯曲部分和刚性部分之间的弯曲关系的数据确定发射器的位置。